annotate hgext/share.py @ 41098:cfd95219102d

strip: move attributes shortcut assigned earlier This series will add support for "soft" stripping using the archived phase in addition to the usual heavy weight revlog stripping. First, we need to refactor the strip function to extract logic common to the "soft-strip" case. We are about to extract bits of the strip function into separate functions. Those blocks of code contain variables for frequently accessed attributes. We move those variables outside of the soon to be moved blocks.
author Boris Feld <boris.feld@octobus.net>
date Wed, 02 Jan 2019 05:02:25 +0100
parents c303d65d2e34
children 526750cdd02d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # Copyright 2006, 2007 Matt Mackall <mpm@selenic.com>
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2 #
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3 # This software may be used and distributed according to the terms of the
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4 # GNU General Public License version 2 or any later version.
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5
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6 '''share a common history between several working directories
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7
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8 Automatic Pooled Storage for Clones
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9 -----------------------------------
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10
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11 When this extension is active, :hg:`clone` can be configured to
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12 automatically share/pool storage across multiple clones. This
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13 mode effectively converts :hg:`clone` to :hg:`clone` + :hg:`share`.
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14 The benefit of using this mode is the automatic management of
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15 store paths and intelligent pooling of related repositories.
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16
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17 The following ``share.`` config options influence this feature:
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18
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19 ``share.pool``
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20 Filesystem path where shared repository data will be stored. When
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21 defined, :hg:`clone` will automatically use shared repository
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22 storage instead of creating a store inside each clone.
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23
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24 ``share.poolnaming``
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25 How directory names in ``share.pool`` are constructed.
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26
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27 "identity" means the name is derived from the first changeset in the
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28 repository. In this mode, different remotes share storage if their
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29 root/initial changeset is identical. In this mode, the local shared
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30 repository is an aggregate of all encountered remote repositories.
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31
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32 "remote" means the name is derived from the source repository's
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33 path or URL. In this mode, storage is only shared if the path or URL
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34 requested in the :hg:`clone` command matches exactly to a repository
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35 that was cloned before.
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36
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37 The default naming mode is "identity".
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38 '''
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39
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40 from __future__ import absolute_import
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41
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42 import errno
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43 from mercurial.i18n import _
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44 from mercurial import (
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45 bookmarks,
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46 commands,
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47 error,
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48 extensions,
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49 hg,
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50 registrar,
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51 txnutil,
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52 util,
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53 )
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54
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55 cmdtable = {}
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56 command = registrar.command(cmdtable)
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57 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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58 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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59 # be specifying the version(s) of Mercurial they are tested with, or
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60 # leave the attribute unspecified.
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61 testedwith = 'ships-with-hg-core'
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62
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63 @command('share',
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64 [('U', 'noupdate', None, _('do not create a working directory')),
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65 ('B', 'bookmarks', None, _('also share bookmarks')),
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66 ('', 'relative', None, _('point to source using a relative path '
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67 '(EXPERIMENTAL)')),
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68 ],
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69 _('[-U] [-B] SOURCE [DEST]'),
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70 helpcategory=command.CATEGORY_REPO_CREATION,
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71 norepo=True)
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72 def share(ui, source, dest=None, noupdate=False, bookmarks=False,
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73 relative=False):
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74 """create a new shared repository
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75
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76 Initialize a new repository and working directory that shares its
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77 history (and optionally bookmarks) with another repository.
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78
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79 .. note::
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80
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81 using rollback or extensions that destroy/modify history (mq,
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82 rebase, etc.) can cause considerable confusion with shared
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83 clones. In particular, if two shared clones are both updated to
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84 the same changeset, and one of them destroys that changeset
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85 with rollback, the other clone will suddenly stop working: all
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86 operations will fail with "abort: working directory has unknown
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87 parent". The only known workaround is to use debugsetparents on
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88 the broken clone to reset it to a changeset that still exists.
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89 """
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90
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91 hg.share(ui, source, dest=dest, update=not noupdate,
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92 bookmarks=bookmarks, relative=relative)
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93 return 0
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94
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95 @command('unshare', [], '', helpcategory=command.CATEGORY_MAINTENANCE)
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96 def unshare(ui, repo):
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97 """convert a shared repository to a normal one
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98
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99 Copy the store data to the repo and remove the sharedpath data.
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100 """
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101
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102 if not repo.shared():
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103 raise error.Abort(_("this is not a shared repo"))
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104
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105 hg.unshare(ui, repo)
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106
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107 # Wrap clone command to pass auto share options.
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108 def clone(orig, ui, source, *args, **opts):
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109 pool = ui.config('share', 'pool')
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110 if pool:
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111 pool = util.expandpath(pool)
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112
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113 opts[r'shareopts'] = {
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114 'pool': pool,
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115 'mode': ui.config('share', 'poolnaming'),
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116 }
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117
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118 return orig(ui, source, *args, **opts)
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119
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120 def extsetup(ui):
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121 extensions.wrapfunction(bookmarks, '_getbkfile', getbkfile)
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122 extensions.wrapfunction(bookmarks.bmstore, '_recordchange', recordchange)
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123 extensions.wrapfunction(bookmarks.bmstore, '_writerepo', writerepo)
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124 extensions.wrapcommand(commands.table, 'clone', clone)
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125
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126 def _hassharedbookmarks(repo):
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127 """Returns whether this repo has shared bookmarks"""
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128 try:
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129 shared = repo.vfs.read('shared').splitlines()
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130 except IOError as inst:
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131 if inst.errno != errno.ENOENT:
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132 raise
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133 return False
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134 return hg.sharedbookmarks in shared
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135
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136 def getbkfile(orig, repo):
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137 if _hassharedbookmarks(repo):
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138 srcrepo = hg.sharedreposource(repo)
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139 if srcrepo is not None:
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140 # just orig(srcrepo) doesn't work as expected, because
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141 # HG_PENDING refers repo.root.
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142 try:
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143 fp, pending = txnutil.trypending(repo.root, repo.vfs,
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144 'bookmarks')
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145 if pending:
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146 # only in this case, bookmark information in repo
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147 # is up-to-date.
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148 return fp
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149 fp.close()
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150 except IOError as inst:
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151 if inst.errno != errno.ENOENT:
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152 raise
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153
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154 # otherwise, we should read bookmarks from srcrepo,
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155 # because .hg/bookmarks in srcrepo might be already
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156 # changed via another sharing repo
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157 repo = srcrepo
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158
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159 # TODO: Pending changes in repo are still invisible in
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160 # srcrepo, because bookmarks.pending is written only into repo.
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161 # See also https://www.mercurial-scm.org/wiki/SharedRepository
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162 return orig(repo)
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163
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164 def recordchange(orig, self, tr):
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165 # Continue with write to local bookmarks file as usual
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166 orig(self, tr)
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167
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168 if _hassharedbookmarks(self._repo):
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169 srcrepo = hg.sharedreposource(self._repo)
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170 if srcrepo is not None:
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171 category = 'share-bookmarks'
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172 tr.addpostclose(category, lambda tr: self._writerepo(srcrepo))
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173
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174 def writerepo(orig, self, repo):
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175 # First write local bookmarks file in case we ever unshare
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176 orig(self, repo)
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177
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178 if _hassharedbookmarks(self._repo):
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179 srcrepo = hg.sharedreposource(self._repo)
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180 if srcrepo is not None:
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181 orig(self, srcrepo)